bootstrap display none

1<div class="d-inline-block"></div>

1<div class="visible">...</div>
2<div class="invisible">...</div>

1<!-- Bootstrap 4 -->
2<div class="d-none"></div>
3
4<!-- Bootstrap 3 -->
5<!-- <div class="hidden-{screen size}"></div> -->
6<div class="hidden-md"></div>

1<div class="d-none"></div> for bootstrap 4

1<span class="d-block p-2 bg-primary text-white">d-block</span>
2<span class="d-block p-2 bg-dark text-white">d-block</span>